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An excess of sugary drinks can specifically lead to ahigher risk of anxietyamong teens, a new study shows.
In a meta-analysis published in the Journal of Human Nutrition and Dietetics, U.K.researchers reviewed various studies from 2000 to 2025.
They explored the link between drinkingsugar-sweetened beverages— like sodas, energy drinks, sweetened juices, teas and coffee — and anxiety disorders in adolescents between 10 and 19 years old.
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Teens with a higher consumption of sugary drinks were found to have about a 34% greater risk of having an anxiety disorder compared to those who drank less.
Seven out of the nine studies analyzed by the researchers showed a significant positive association between sugary drinks intake and anxiety symptoms.

Teens who drank more sugar-sweetened beverages were found to have about a 34% higher chance of having an anxiety disorder.(iStock)
“With increasing concern about adolescent nutrition, most public health initiatives have emphasized the physical consequences of poor dietary habits, such as obesity andtype 2 diabetes,” study co-author Dr.Chloe Casey, lecturer in nutrition at Bournemouth University in the U.K., commented in a press release statement.
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“However, themental health implicationsof diet have been under-explored by comparison, particularly for drinks that are energy-dense but low in nutrients.”
The study was based on observational data, which does not prove that drinking sugary beverages directly causes anxiety.There is also not a clear indication of whether sugary drinks cause anxiety or if anxious teens are more inclined to drink them.

The study does not confirm a direct cause, but does show a strong association between sugary drinks and anxiety.(iStock)
“While we may not be able to confirm at this stage what the direct cause is, this study has identified an unhealthy connection between consumption of sugary drinks and anxiety disorders in young people,” Casey said.
“Anxiety disorders in adolescence have risen sharply in recent years, so it is important to identifylifestyle habitsthat can be changed to reduce the risk of this trend continuing.”
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About 11% of American children between the ages of 3 and 17 were diagnosed with anxiety between 2022 and 2023, according to the Centers for Disease Control and Prevention.
“Anxiety problems, behavior disorders and depression are the most commonly diagnosedmental disordersin children,” states the agency’s website.

About 11% of American children between the ages of 3 and 17 have diagnosed anxiety, according to CDC data.(iStock)
“While it’s important to note that this study is correlation, not causation, I have no doubt that a better-designed study would show the same results,�
“Soda, aka liquid sugar — with no fiber, protein or fat to slow absorption — floods the bloodstream faster than almost any other type of food or drink,” said Muhlstein, who was not involved in the study.

Sugary drinks are “liquid candy” to the body, one registered dietitian said.(iStock)
Excessive blood sugar spikes can also affect weight, acne, sleep quality and emotional regulation, she shared, regardless of caffeine levels.
“What these kids drink makes a huge difference to theirphysical and emotionalstate, and caffeine on top of unstable blood sugar only makes it worse,” Muhlstein warned.
nervous systemresponds to stress.”

One expert advised parents to encourage more balance in their children’s diet and lifestyle habits.(iStock)
“Highly sweetened drinks can create quick energy highs followed by crashes, and when caffeine is added to the mix, it can amplify stress responses in the body.”
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Poon advised parents to encourage their kids to reduce the frequency of sugary beverages and to stay hydrated with water, herbal teas or sparkling water to support more stable energy levels.
Meals should also be balanced with fiber,healthy fatsand proteins to stabilize blood sugar, which can impact mood and concentration.
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“Adolescence is a critical window for brain development, so supporting teens withbalanced nutrition, stable energy levels and adequate hydration may help support both physical and emotional well-being,” Poon added.
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